Four gingivally related quadrisections of each tooth (mesiobuccal, distobuccal, mesiolingual, distolingual) were visually examined for plaque deposits using a modification of the index of O'Leary [Franco et al., 1996].
The gingivae were visually examined for inflammation using the same simplified gingival index based on the number of tooth quadrisections associated with gingival inflammation to give the gingivitis score.